我是 LongbridgeAI，我可以总结文章信息。“七大科技股” 经历了超过一年来最严重的一日跌幅，市值蒸发了 7870 亿美元。此次抛售是由于投资者对 Alphabet 和 Tesla 等公司在人工智能基础设施上的巨额支出感到担忧，同时也受到伊朗冲突带来的地缘政治不确定性的影响。尽管资本支出仍然高企，以支持人工智能和机器人技术的倡议，但投资者越来越关注这些投资所带来的回报
close Shares in the Magnificent 7 tech stocks have slumped this week amid investors' concerns about massive spending by hyperscalers on artificial intelligence infrastructure amid uncertainty about the global economy due to the resumption of hostilities in the Iran war. The so-called Magnificent Seven tech stocks experienced their biggest one-day drop in over a year on Thursday, with Bloomberg reporting that an index of the group fell 4.8% and erased about $787 billion in market value – the steepest single day decline since April 2025. The report noted that as of Thursday's close, the Mag Seven index was down about 11% from the record high it reached in late May, with about $2 trillion in market cap wiped out. As of Friday morning, six of the Mag Seven stocks were down over the last five days of trading, with Tesla down over 19%, while shares in Google parent Alphabet (-8.5%), Amazon (-6.3%), Meta (-6%), Microsoft (-1.3%) and Apple (-0.4%) were also down. By contrast, Nvidia shares are up about 1.9% in the last five days. TESLA TOUTS 380,000 UNSUPERVISED ROBOTAXI MILES WITH 'ZERO NOTABLE INCIDENTS' Tech stocks' slide steepened after Alphabet and Tesla released their earnings report after Wednesday's trading session, with both companies reporting large capital expenditures this year. Alphabet announced plans to spend about $200 billion on capex this year, up from a prior estimate of $190 billion, with the higher spending on AI data centers and infrastructure contributing to the company's quarterly cash flow turning for the first time since Google went public, per Bloomberg's report. "Alphabet's higher investment outlook helps reinforce our view that the AI infrastructure buildout remains a durable theme," said Edward Jones senior analyst Brian Therien. "However, the negative share-price reaction may indicate that investors are becoming more focused on returns generated on AI-related investments." GOOGLE LAUNCHES GLOBAL STUDY OF MILLIONS OF AI CHATS TO UNDERSTAND HOW PEOPLE USE ARTIFICIAL INTELLIGENCE Tesla's profits came in well below the estimates of Wall Street analysts amid a ramp up in spending, with CEO Elon Musk saying on the company's earnings call that 2026 will be a "massive capex year" and that the company "should be spending on capex as fast as we can – spend as fast as we can without it being too wasteful." The company's spending aims to enhance its AI capabilities as well as boosting production of Optimus humanoid robots, as well as robotaxis and autonomous vehicles. ELON MUSK LOSES TRILLIONAIRE STATUS AFTER TECH SELL-OFF ERASES BILLIONS FROM FORTUNE Ryan Lee, senior vice president of product and strategy at Direxion, said in a note that, "While Tesla continues to invest heavily in AI and robotics, monetization remains the central concern following the earnings miss." "Tesla has become the physical AI story, with the potential to bring artificial intelligence into consumers' everyday lives through autonomous vehicles and robotics. The question is how quickly those investments can begin supporting the valuation," Lee added. GET FOX BUSINESS ON THE GO BY CLICKING HERE